An astronomical instrument measures the intensity of cosmic microwave background radiation and outputs a 24-bit binary reading.
At a specific coordinate, the reading is:
1101 0100 1011 1000 1111 0110
Convert 1101 0100 1011 1000 1111 0110 to hexadecimal.
117 exam-style questions on Edexcel GCSE Computer Science Binary, covering Binary representation and number of states, Unsigned and two's complement integers, Converting denary and 8-bit binary, Binary addition and binary shifts, Concept of overflow, and Hexadecimal notation and conversion. Each one has a worked solution and a mark scheme showing where the marks go.